Kisai Intoxicated Breathalyzer Watch tells you when to call a cab

I think we’ve all had one of those days where you need to spend a bit of time with a few friends and a good stiff drink. Once you’ve had a chance to unwind and forget all of your day’s troubles, you still need to head home. The smart thing to do is to make sure that you have a designated driver, but we all have that friend that insists they don’t need one. So how exactly do you prove to your good friend that they’re intoxicated beyond the legal limit? Just have them blow into your watch.

No, don’t have them blow into just any watch, or else they might thing you’re the one who has been drinking too much. What you need is the Kisai Intoxicated Breathalyzer Watch from TokyoFlash. This mobile timepiece does more than just keep track of the hour. Once you pop open the sensor cap, you’ll just have your friend blow a little air in, and in just five seconds, you’ll get a reading. There are 10 different levels of BAC (blood alcohol content) shown on the screen, and the results will be shown in green, yellow, or red, depending on your level of sobriety.

If you’re not sure that the results are accurate, TokyoFlash built in a sobriety mini-game into the watch. There is a row of blocks that slides back-and-forth on the screen. All you need to do is hit the button on the face of the watch when the blocks line up in the middle of the screen. If you can’t do it, you might be impaired (or just have poor hand-eye coordination).

Aside from the special features, the watch has a unique interface, which is typical of TokyoFlash watches. This one uses the negative space between rows of blocks to depict the current hour and minute. The Kisai Intoxicated Breathalyzer Watch has a stainless steel body, and recharges with an included USB cable. You can pre-order it now for $149, and it will ship on July 8th.